investing in commodities and energy china gets a third of its oil from africa. many countries have become dependent on the economic might of china, and will feel the pain of any slowing in chinese growth. china's influence continues deep into the african bush felt. >> robin joins us from johannesburg, south africa. excellent piece when you look at this. china overtook the u.s. as africa's largest trading partner three years ago. president obama received criticism from some africans, in particularly, kenyans, who had a lot of hope at least because of obama's father being born in kenya, there would be opportunities, greater opportunities for trade. why do you think we haven't seen that? >> just to put it into perspective, president obama spent less than 24 hours in africa during his entire first term. so africans do indeed feel slightly shortchanged. but this massive chinese presence in africa, to be fair, started way before president obama took office, 10, 15 years ago. the chinese started moving into africa. and of course their focus was africa's raw materials, its commodities which helpe